Troop12

I just got a new set of wheels and tires for my 12 g37xs sedan. Niche misano 19x8.5 with hankook 245 45 19 tires. I had them mounted and balanced at my buddys shop. After putting them on at 70-80 the steering wheel and seats shake/vibrate a bit. He checked them again and all balanced to 0 and none of the wheels are bent at all. So I went to my other buddys shop and had him re balance them. This time they took allot less weight but still same issue (just a bit better). The oem wheels didnt shake or vibrate one bit. Any ideas? It's driving me crazy. Thanks for any help....

JSolo

iTrader: (14)

You are using hub rings to properly center the wheel on the hub?

Troop12

Yes I did use the hub rings

blnewt

iTrader: (13)

I'd also take a wire brush to the hubs and get them cleaned up, doesn't take much debris to get a mount that's slightly off. And you did get new tapered seat lug nuts right?

Troop12

I did wire brush the hubs really good and also have the tapered seat lugs. I was going to try another set of lugs just to see but I don't think that will help since the ones on there are correct.

blnewt

iTrader: (13)

Since you got new tires at the same time it could also be tire related. Also there's an ink circle on each tire that should be lined up w/ the wheels dot to minimize balance weights, here's a decent link on that
Performance Tire Mounting | Yokohama Tire Corp.
And if the shop doesn't have a modern Hunter Road Force machine it might be worth searching for a shop that uses one.

Troop12

Oh I didn't know that. There is a green dot on each tire. I'm not sure on the wheels where the dot would be to align them bit I bet thats the issue? Is that indicator on the wheel noticeable when the tire is already mounted or would the tire have to be dismounted to see that?